/* ============================================================
   이안애 (RepoKeeper) — Landing Page
   Dark / terminal aesthetic · deep indigo accent
   ============================================================ */

:root {
  --bg: #0a0b10;
  --bg-2: #0d0f17;
  --surface: #14161f;
  --surface-2: #191c27;
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .14);

  --txt: #e9eaf0;
  --txt-2: #9398a6;
  --txt-3: #5d626f;

  --accent-h: 256;
  /* hue, tweakable */
  --accent: oklch(0.62 0.19 var(--accent-h));
  --accent-lo: oklch(0.55 0.19 var(--accent-h));
  --accent-hi: oklch(0.72 0.15 var(--accent-h));
  --accent-glow: oklch(0.62 0.19 var(--accent-h) / .28);
  --accent-dim: oklch(0.62 0.19 var(--accent-h) / .12);

  --green: #36d399;
  --amber: #fbbf24;
  --red: #f87171;
  --gray: #6b7080;

  --sans: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1180px;
  --radius: 16px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* page-wide subtle grid + glow texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
  opacity: .5;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 1100px;
  height: 700px;
  background: radial-gradient(ellipse at center, var(--accent-glow), transparent 65%);
  filter: blur(40px);
  opacity: .55;
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

/* mono eyebrow / label */
.mono {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--txt-3);
}

.mono .tick {
  color: var(--accent);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-hi);
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--accent-dim);
}

.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 30px -8px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hi);
  transform: translateY(-2px);
  box-shadow: 0 14px 36px -8px var(--accent-glow);
}

.btn-ghost {
  background: rgba(255, 255, 255, .03);
  border-color: var(--line-2);
  color: var(--txt);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .07);
  transform: translateY(-2px);
  border-color: var(--line-2);
}

.btn-sm {
  padding: 9px 16px;
  font-size: 13.5px;
  border-radius: 10px;
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}

.nav.scrolled {
  background: rgba(10, 11, 16, .72);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.brand .glyph {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 4px 16px -4px var(--accent-glow);
}

.brand .en {
  color: var(--txt-3);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  font-size: 14.5px;
  color: var(--txt-2);
  transition: color .2s;
}

.nav-links a:hover {
  color: var(--txt);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

@media (max-width: 880px) {
  .nav-links {
    display: none;
  }
}

/* language switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  gap: 2px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, .03);
  border-radius: 100px;
}

.lang-btn {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--txt-2);
  background: transparent;
  border: 0;
  padding: 6px 12px;
  border-radius: 100px;
  cursor: pointer;
  transition: color .18s ease, background .18s ease;
  white-space: nowrap;
}

.lang-btn:hover {
  color: var(--txt);
}

.lang-btn.is-active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px -4px var(--accent-glow);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 96px 32px 60px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(26px, 6.2vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin: 26px auto 0;
  max-width: 16ch;
  text-wrap: balance;
}

.hero h1 .hl {
  color: var(--accent-hi);
}

.hero h1 .brandword {
  position: relative;
  background-image: linear-gradient(100deg, #c7d2fe 0%, #ffffff 45%, var(--accent-hi) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-weight: 800;
  letter-spacing: -0.045em;
  filter: drop-shadow(0 4px 24px var(--accent-glow));
}

.hero h1 .brandword::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.06em;
  height: 3px;
  border-radius: 100px;
  background: linear-gradient(90deg, transparent, var(--accent-hi), transparent);
  opacity: .7;
}

.hero .sub {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--txt-2);
  max-width: 46ch;
  margin: 24px auto 0;
  text-wrap: pretty;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 34px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  gap: 26px;
  justify-content: center;
  margin-top: 30px;
  flex-wrap: wrap;
}

.hero-meta span {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--txt-3);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-meta .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* iPad device frame */
.device-wrap {
  margin: 70px auto 0;
  max-width: 1080px;
  perspective: 2000px;
}

.device-img {
  display: none;
}

.ipad {
  position: relative;
  border-radius: 30px;
  padding: 13px;
  background: linear-gradient(155deg, #23262f, #0e1016);
  box-shadow:
    0 2px 0 rgba(255, 255, 255, .06) inset,
    0 50px 100px -30px rgba(0, 0, 0, .8),
    0 0 0 1px rgba(255, 255, 255, .04);
}

.ipad-screen {
  border-radius: 18px;
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid rgba(255, 255, 255, .05);
  aspect-ratio: 4 / 3;
}

.ipad .cam {
  position: absolute;
  top: 50%;
  left: 6px;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #2a2d36;
}

/* ---------- mini dashboard mockup ---------- */
.dash {
  display: grid;
  grid-template-columns: 188px 1fr;
  height: 100%;
  font-size: 12px;
  background: var(--bg-2);
}

.dash-side {
  border-right: 1px solid var(--line);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg);
}

.dash-side .s-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px 14px;
  font-weight: 700;
  font-size: 13px;
}

.dash-side .s-brand .glyph {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  object-fit: cover;
}

.dash-side .nav-grp {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  color: var(--txt-3);
  text-transform: uppercase;
  padding: 12px 8px 5px;
}

.dash-side .nav-i {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 9px;
  border-radius: 8px;
  color: var(--txt-2);
  font-size: 11.5px;
}

.dash-side .nav-i.on {
  background: var(--accent-dim);
  color: var(--txt);
}

.dash-side .nav-i .ico {
  width: 13px;
  height: 13px;
  opacity: .8;
}

.dash-side .nav-i.on .ico {
  color: var(--accent-hi);
  opacity: 1;
}

.dash-side .nav-i .badge {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 9px;
  background: rgba(255, 255, 255, .07);
  padding: 1px 6px;
  border-radius: 100px;
  color: var(--txt-2);
}

.dash-side .nav-i.on .badge {
  background: var(--accent);
  color: #fff;
}

.dash-main {
  padding: 18px 20px;
  overflow: hidden;
}

.dash-h {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}

.dash-h h3 {
  font-size: 18px;
  letter-spacing: -0.02em;
}

.dash-h .when {
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--txt-3);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 11px;
  background: var(--surface);
}

.stat .n {
  font-family: var(--mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat .l {
  font-size: 10px;
  color: var(--txt-3);
  margin-top: 6px;
}

.stat.act .n {
  color: var(--green);
}

.stat.aban .n {
  color: var(--red);
}

.stat.clean .n {
  color: var(--amber);
}

.stat.fav .n {
  color: var(--accent-hi);
}

.repo-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.repo-row {
  display: flex;
  align-items: center;
  gap: 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 12px;
  background: var(--surface);
}

.repo-row .lang {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}

.repo-row .nm {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
}

.repo-row .ds {
  color: var(--txt-3);
  font-size: 10.5px;
  margin-left: 4px;
}

.repo-row .spacer {
  flex: 1;
}

.repo-row .chip {
  font-family: var(--mono);
  font-size: 9px;
  padding: 2px 7px;
  border-radius: 100px;
  letter-spacing: .04em;
}

.chip.green {
  background: rgba(54, 211, 153, .14);
  color: var(--green);
}

.chip.amber {
  background: rgba(251, 191, 36, .14);
  color: var(--amber);
}

.chip.red {
  background: rgba(248, 113, 113, .14);
  color: var(--red);
}

.repo-row .score {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  width: 30px;
  text-align: right;
}

.repo-row .meta-s {
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--txt-3);
  display: flex;
  gap: 9px;
}

/* ============================================================
   GENERIC SECTION
   ============================================================ */
section {
  position: relative;
  z-index: 1;
}

.sec {
  padding: 110px 0;
}

.sec.wrap {
  padding-left: 32px;
  padding-right: 32px;
}

.sec-head {
  max-width: 60ch;
}

.sec-head.center {
  margin: 0 auto;
  text-align: center;
}

.sec-head h2 {
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.03em;
  line-height: 1.12;
  font-weight: 800;
  margin-top: 16px;
  text-wrap: balance;
}

.sec-head p {
  color: var(--txt-2);
  margin-top: 16px;
  font-size: 17px;
  text-wrap: pretty;
}

/* ---------- Problem / answer ---------- */
.prob-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 56px;
}

.prob {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 26px 26px 24px;
  transition: border-color .25s, transform .25s, background .25s;
}

.prob:hover {
  border-color: var(--line-2);
  transform: translateY(-3px);
  background: var(--surface-2);
}

.prob .q {
  display: flex;
  gap: 12px;
  color: var(--txt-2);
  font-size: 16px;
}

.prob .q .mk {
  font-family: var(--mono);
  color: var(--red);
  flex: none;
}

.prob .ans {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-2);
}

.prob .ans .mk {
  font-family: var(--mono);
  color: var(--accent);
  flex: none;
}

.prob .ans b {
  color: var(--txt);
  font-weight: 700;
}

.prob .ans .t {
  font-size: 15px;
}

.prob .ans .t span {
  color: var(--txt-2);
}

@media (max-width: 760px) {
  .prob-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Features ---------- */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
}

.feat {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: border-color .25s, transform .25s, background .25s;
}

.feat:hover {
  border-color: var(--line-2);
  transform: translateY(-4px);
  background: var(--surface-2);
}

.feat .idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: .1em;
}

.feat .ic {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  margin: 16px 0 18px;
  display: grid;
  place-items: center;
  background: var(--accent-dim);
  border: 1px solid var(--line);
}

.feat .ic svg {
  width: 22px;
  height: 22px;
  color: var(--accent-hi);
}

.feat h3 {
  font-size: 19px;
  letter-spacing: -0.02em;
}

.feat p {
  color: var(--txt-2);
  font-size: 14.5px;
  margin-top: 10px;
}

.feat ul {
  list-style: none;
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.feat ul li {
  font-size: 13.5px;
  color: var(--txt-2);
  display: flex;
  gap: 9px;
  align-items: flex-start;
}

.feat ul li::before {
  content: "›";
  font-family: var(--mono);
  color: var(--accent);
  flex: none;
}

.feat .big {
  grid-column: span 2;
}

@media (max-width: 980px) {
  .feat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feat .big {
    grid-column: span 2;
  }
}

@media (max-width: 680px) {
  .feat-grid {
    grid-template-columns: 1fr;
  }

  .feat .big {
    grid-column: span 1;
  }
}

/* ---------- Score section ---------- */
.score-sec {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.score-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 56px;
}

.score-signals {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--mono);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.sig {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
}

.sig:last-child {
  border-bottom: none;
}

.sig .label {
  color: var(--txt-2);
}

.sig .val {
  font-weight: 700;
}

.sig .val.pos {
  color: var(--green);
}

.sig .val.neg {
  color: var(--red);
}

.score-vis {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.grade-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--surface);
}

.grade-card .top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.grade-card .nm {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
}

.grade-card .pts {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.grade-bar {
  height: 8px;
  border-radius: 100px;
  background: rgba(255, 255, 255, .06);
  margin-top: 16px;
  overflow: hidden;
}

.grade-bar i {
  display: block;
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--accent-lo), var(--accent-hi));
  width: 0;
  transition: width 1.1s cubic-bezier(.2, .7, .2, 1);
}

.grade-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.grade-tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--line);
  color: var(--txt-2);
}

.grade-tag.hot {
  background: var(--accent-dim);
  border-color: transparent;
  color: var(--accent-hi);
}

.grade-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.grade-legend .g {
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 11px;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--txt-2);
}

.grade-legend .g.vi {
  color: var(--green);
  border-color: rgba(54, 211, 153, .3);
}

.grade-legend .g.arc {
  color: var(--red);
  border-color: rgba(248, 113, 113, .3);
}

@media (max-width: 880px) {
  .score-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

/* ---------- Status classification ---------- */
.status-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.status-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.status-card .led {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.status-card .nm {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
  margin-top: 16px;
  letter-spacing: .04em;
}

.status-card .ko {
  color: var(--txt-2);
  font-size: 13.5px;
  margin-top: 4px;
}

.status-card .rng {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--txt-3);
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-2);
}

.status-card.active .led {
  background: var(--green);
  box-shadow: 0 0 14px var(--green);
}

.status-card.paused .led {
  background: var(--amber);
  box-shadow: 0 0 14px var(--amber);
}

.status-card.abandoned .led {
  background: var(--red);
  box-shadow: 0 0 14px var(--red);
}

.status-card.archived .led {
  background: var(--gray);
}

/* abandon slider demo */
.aban-demo {
  margin-top: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 30px;
}

.aban-demo .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.aban-demo .lab {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--txt-2);
}

.aban-demo .days {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 800;
  color: var(--accent-hi);
}

.aban-demo input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 100px;
  margin-top: 24px;
  background: linear-gradient(90deg, var(--accent) var(--p, 30%), rgba(255, 255, 255, .08) var(--p, 30%));
  cursor: pointer;
}

.aban-demo input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--accent);
  box-shadow: 0 2px 10px rgba(0, 0, 0, .4);
  cursor: pointer;
}

.aban-demo .scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--txt-3);
  margin-top: 10px;
}

.aban-out {
  display: flex;
  gap: 10px;
  margin-top: 22px;
  flex-wrap: wrap;
}

.aban-out .pill {
  font-family: var(--mono);
  font-size: 12px;
  padding: 7px 14px;
  border-radius: 100px;
  border: 1px solid var(--line);
  display: flex;
  gap: 8px;
  align-items: center;
  transition: opacity .25s;
}

.aban-out .pill .c {
  font-weight: 700;
}

@media (max-width: 760px) {
  .status-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Screens showcase ---------- */
.screens-rail {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 48px;
}

.screen-tag {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--txt-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 16px;
  display: flex;
  gap: 10px;
  align-items: center;
  transition: border-color .2s, color .2s, background .2s, transform .2s;
}

.screen-tag:hover {
  border-color: var(--line-2);
  color: var(--txt);
  background: var(--surface);
  transform: translateY(-2px);
}

.screen-tag .num {
  color: var(--accent);
}

.screen-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.sg {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  background: var(--surface);
}

.sg .gh {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-hi);
}

.sg ul {
  list-style: none;
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.sg ul li {
  font-size: 14px;
  color: var(--txt-2);
  display: flex;
  gap: 9px;
}

.sg ul li::before {
  content: "·";
  color: var(--accent);
}

@media (max-width: 980px) {
  .screen-groups {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .screen-groups {
    grid-template-columns: 1fr;
  }
}

/* ---------- Tech stack ---------- */
.tech-sec {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.tech {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface);
}

.tech .k {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--txt-3);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.tech .v {
  font-size: 17px;
  font-weight: 700;
  margin-top: 10px;
  letter-spacing: -0.01em;
}

.tech .d {
  font-size: 13px;
  color: var(--txt-2);
  margin-top: 6px;
}

@media (max-width: 880px) {
  .tech-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Closing CTA ---------- */
.cta-sec {
  padding: 130px 32px;
  text-align: center;
}

.cta-box {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-dim), var(--surface) 70%);
  padding: 70px 40px;
  position: relative;
  overflow: hidden;
}

.cta-box h2 {
  font-size: clamp(28px, 4.4vw, 52px);
  letter-spacing: -0.035em;
  line-height: 1.1;
  font-weight: 800;
  text-wrap: balance;
}

.cta-box h2 .hl {
  color: var(--accent-hi);
}

.cta-box p {
  color: var(--txt-2);
  margin-top: 18px;
  font-size: 17px;
}

.cta-box .hero-cta {
  margin-top: 32px;
}

/* benefits */
.benefits {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  max-width: 720px;
  margin: 44px auto 0;
  text-align: left;
}

.benefit {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, .02);
}

.benefit .ck {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--accent-dim);
  display: grid;
  place-items: center;
  flex: none;
  color: var(--accent-hi);
}

.benefit .ck svg {
  width: 13px;
  height: 13px;
}

.benefit span {
  font-size: 15px;
  color: var(--txt);
}

.benefit span em {
  color: var(--txt-2);
  font-style: normal;
}

@media (max-width: 620px) {
  .benefits {
    grid-template-columns: 1fr;
  }
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 44px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}

.footer .quote {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--txt-3);
}

.footer .quote b {
  color: var(--txt-2);
  font-weight: 600;
}

/* ---------- scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* terminal cursor */
.cursor {
  display: inline-block;
  width: 9px;
  height: 1.05em;
  background: var(--accent-hi);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ---------- commit heatmap (in mockup) ---------- */
.heat {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  padding: 13px 15px;
  margin-bottom: 12px;
}

.heat-h {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 11px;
}

.heat-h .t {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--txt-2);
  font-weight: 600;
}

.heat-h .tot {
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--txt-3);
}

.heat-grid {
  display: grid;
  grid-template-columns: repeat(52, 1fr);
  grid-template-rows: repeat(7, 1fr);
  grid-auto-flow: column;
  gap: 2px;
}

.heat-grid i {
  aspect-ratio: 1;
  border-radius: 2px;
  background: rgba(255, 255, 255, .05);
}

.heat-legend {
  display: flex;
  align-items: center;
  gap: 5px;
  justify-content: flex-end;
  margin-top: 9px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--txt-3);
}

.heat-legend i {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

/* ---------- dashboard bottom cards (dist + weekly) ---------- */
.dash-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.dcard {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  padding: 13px 15px;
}

.dcard .dch {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 13px;
}

.dcard .dch .t {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--txt-2);
  font-weight: 600;
}

.dcard .dch .s {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--txt-3);
}

/* status distribution */
.dist-bar {
  display: flex;
  height: 9px;
  border-radius: 100px;
  overflow: hidden;
  gap: 2px;
}

.dist-bar i {
  display: block;
  height: 100%;
}

.dist-legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px 16px;
  margin-top: 13px;
}

.dist-legend span {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--txt-2);
  display: flex;
  align-items: center;
  gap: 7px;
}

.dist-legend span b {
  color: var(--txt-3);
  margin-left: auto;
  font-weight: 600;
}

.dist-legend .dt {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  flex: none;
}

/* weekly activity */
.wk-spark {
  width: 100%;
  height: 40px;
  display: block;
}

.wk-deltas {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 11px;
}

.wk-d .v {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.wk-d .v .up {
  color: var(--green);
  font-size: 10px;
  margin-left: 2px;
}

.wk-d .l {
  font-size: 9px;
  color: var(--txt-3);
  margin-top: 3px;
}

/* ---------- 8-state LEDs ---------- */
.status-card.completed .led {
  background: #60a5fa;
  box-shadow: 0 0 14px #60a5fa;
}

.status-card.production .led {
  background: #2dd4bf;
  box-shadow: 0 0 14px #2dd4bf;
}

.status-card.experiment .led {
  background: #a78bfa;
  box-shadow: 0 0 14px #a78bfa;
}

.status-card.unknown .led {
  background: #4b5563;
}

.status-row-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--txt-3);
  margin: 30px 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-row-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.status-row-label .pin {
  color: var(--accent-hi);
}

/* ---------- tech two columns ---------- */
.tech-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
}

.tech-col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 28px 28px 12px;
}

.tech-col .ch {
  display: flex;
  align-items: center;
  gap: 11px;
  padding-bottom: 6px;
}

.tech-col .ch .ci {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-dim);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--accent-hi);
}

.tech-col .ch .ci svg {
  width: 20px;
  height: 20px;
}

.tech-col .ch .ct {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.tech-col .ch .cs {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--txt-3);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.tech-row {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 15px 0;
  border-top: 1px dashed var(--line-2);
}

.tech-row .k {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: .08em;
  text-transform: uppercase;
  flex: none;
  width: 92px;
  padding-top: 3px;
}

.tech-row .vv {
  flex: 1;
}

.tech-row .vv .v {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.tech-row .vv .d {
  font-size: 13px;
  color: var(--txt-2);
  margin-top: 3px;
}

@media (max-width: 880px) {
  .tech-cols {
    grid-template-columns: 1fr;
  }
}

/* ---------- privacy / trust band ---------- */
.trust-sec {
  padding: 60px 32px;
}

.trust-band {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 40px;
  align-items: center;
}

.trust-band .lead h3 {
  font-size: 22px;
  letter-spacing: -0.02em;
}

.trust-band .lead p {
  color: var(--txt-2);
  font-size: 14px;
  margin-top: 10px;
}

.trust-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.trust-pt {
  display: flex;
  gap: 13px;
  align-items: flex-start;
}

.trust-pt .ti {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-dim);
  display: grid;
  place-items: center;
  flex: none;
  color: var(--accent-hi);
}

.trust-pt .ti svg {
  width: 15px;
  height: 15px;
}

.trust-pt .tx {
  font-size: 14.5px;
  color: var(--txt);
}

.trust-pt .tx em {
  color: var(--txt-2);
  font-style: normal;
}

.trust-pt .tx code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent-hi);
  background: var(--accent-dim);
  padding: 1px 6px;
  border-radius: 5px;
}

@media (max-width: 760px) {
  .trust-band {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 30px;
  }
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 820px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .2s, background .2s;
}

.faq-item:hover {
  border-color: var(--line-2);
}

.faq-item[open] {
  background: var(--surface-2);
  border-color: var(--line-2);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--txt);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "";
  margin-left: auto;
  flex: none;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--accent-hi);
  border-bottom: 2px solid var(--accent-hi);
  transform: rotate(45deg);
  transition: transform .25s ease;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
}

.faq-item summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.faq-a {
  padding: 0 24px 22px;
  color: var(--txt-2);
  font-size: 15px;
  line-height: 1.7;
  text-wrap: pretty;
}

@media (max-width: 600px) {
  .faq-item summary {
    padding: 17px 18px;
    font-size: 15.5px;
  }

  .faq-a {
    padding: 0 18px 18px;
  }
}

/* ---------- contact ---------- */
.contact-sec {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  padding: 96px 0;
}

.contact-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-lead h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  letter-spacing: -0.03em;
  line-height: 1.12;
  font-weight: 800;
  margin-top: 16px;
}

.contact-lead p {
  color: var(--txt-2);
  margin-top: 16px;
  font-size: 16px;
  max-width: 38ch;
  text-wrap: pretty;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  background: var(--surface);
  transition: border-color .2s, transform .2s, background .2s;
}

.contact-method:hover {
  border-color: var(--line-2);
  transform: translateY(-2px);
  background: var(--surface-2);
}

.contact-method .cm-ic {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-dim);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  flex: none;
  color: var(--accent-hi);
}

.contact-method .cm-ic svg {
  width: 19px;
  height: 19px;
}

.contact-method .cm-tx {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-method .cm-k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--txt-3);
}

.contact-method .cm-v {
  font-size: 15px;
  font-weight: 600;
  color: var(--txt);
}

.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.cf-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cf-field label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--txt-3);
}

.cf-field input,
.cf-field textarea {
  font-family: var(--sans);
  font-size: 15px;
  color: var(--txt);
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 12px 14px;
  width: 100%;
  transition: border-color .2s, box-shadow .2s;
  resize: vertical;
}

.cf-field input::placeholder,
.cf-field textarea::placeholder {
  color: var(--txt-3);
}

.cf-field input:focus,
.cf-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.cf-submit {
  align-self: flex-start;
  margin-top: 4px;
}

@media (max-width: 820px) {
  .contact-band {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ---------- small mobile gutters & nav fit ---------- */
@media (max-width: 600px) {

  .wrap,
  .sec.wrap,
  .hero,
  .cta-sec,
  .trust-sec {
    padding-left: 20px;
    padding-right: 20px;
  }

  .contact-form {
    padding: 22px;
  }

  .hero h1 {
    font-size: clamp(28px, 7.8vw, 42px);
  }

  .brand .en {
    display: none;
  }

  .lang-switch {
    gap: 0;
    padding: 2px;
  }

  .lang-btn {
    padding: 4px 8px;
    font-size: 10.5px;
  }

  .device-wrap {
    margin-top: 48px;
    perspective: none;
  }

  .ipad {
    display: none;
  }

  .device-img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
    border: 1px solid var(--line);
    box-shadow: 0 30px 70px -30px rgba(0, 0, 0, .8);
  }
}

/* respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}